Two charges are separated by a distance d. If one the charges is doubled while the other is tripled, what happens to the force between the charges?
A. it increases by a factor of 5
B. it increases by a factor of 6
C. it increases by a factor of 12
D. it increases by a factor of 18
E. it increases by a factor of 36
B. it increases by a factor of 6
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